Azure Cosmos DB pricing
Fully managed globally distributed, multi-model database service
Start your Azure free account and get a $200 credit for 30 days, plus get 12 months of free access to Azure Cosmos DB.
Develop real-time, always-on applications at any scale with Azure Cosmos DB, a fully managed globally distributed, multi-model database service with 99.999 per cent high availability and single-digit millisecond read and write latencies anywhere in the world, backed by comprehensive SLAs. Simplify app development and boost developer productivity with built-in, cloud-native capabilities including five consistency models, automatic indexing and multiple data models and APIs.
Easily migrate existing data from MongoDB, Gremlin and Cassandra and Etcd databases without changing your application, and run real-time operational analytics with Apache Spark connector and Jupyter Notebooks (preview) natively built in to Azure Cosmos DB. Only pay for what you need, by elastically and instantly scaling throughput and storage without limits.
US government entities are eligible to purchase Azure Government services from a licensing solution provider with no upfront financial commitment or directly through a pay-as-you-go online subscription.
Important: The price in R$ is merely a reference; this is an international transaction and the final price is subject to exchange rates and the inclusion of IOF taxes. An eNF will not be issued.
Azure Germany is available to customers and partners who have already purchased this, doing business in the European Union (EU), the European Free Trade Association (EFTA) and in the United Kingdom (UK). It provides data residency in Germany with additional levels of control and data protection. You can also sign up for a free Azure trial.
Azure Cosmos DB bills for provisioned throughput and consumed storage by the hour.
Provisioned throughput is expressed in Request Units per second (RU/s), which can be used for various database operations (e.g. inserts, reads, replaces, upserts, deletes, queries etc.). For example, 1 RU/s is sufficient for processing one eventually consistent read per second of 1K item, and 5 RU/s is sufficient for processing one write per second of 1K item.
Storage is billed for each GB used for your SSD-backed data and index.
New accounts are eligible to receive 400 RU/s throughput and 5 GBs storage per month with Azure Cosmos DB free tier
The minimum provisioned throughput for a container or database is 400 RU/s, which corresponds to 1 billion reads per month. You can provision throughput and elastically scale in increments of 100 RU/s (equivalent to 267.8 million reads per month) and elastically scale up to hundreds of millions of RU/s at any time while maintaining the SLAs. You will be billed an hourly rate for the maximum throughput provisioned on your container or database. Your account can be configured to accept writes in multiple regions (multi-master) or a single region (single-master).
Manually configuring provisioned throughput
|Provisioned Throughput – Unit (100 RU/s per hour)||Price|
|100 RU/s single-region account||1 x $-|
|100 RU/s multi-region, single master account with N > 1 regions||N regions x $-|
|100 RU/s multi-region, multi-master account with N > 1 regions*||N x $-|
You can estimate your provisioned throughput needs by using the Azure Cosmos DB capacity planner (i.e. RU calculator).
Automatically configuring provisioned throughput with Autopilot Preview
With Autopilot mode, your containers and databases will automatically scale provisioned throughput based on workload patterns, maintaining SLAs, without requiring you to manually manage capacity or handle rate-limiting. This is best for unpredictable, infrequent or bursty workloads. As your application makes requests to your Cosmos container or database, Autopilot mode will automatically and instantaneously adjust provisioned throughput based on the needs of the workload.
|Autopilot Throughput – Unit (100 RU/s per hour)||Price|
|100 Autopilot RU/s, single-region account||$-|
|100 Autopilot RU/s, multi-region, single master account with N regions||N regions x $-, where N > 1|
|100 RU/s multi-region, multi-master account with N regions||N regions x $-, where N > 1|
For more information, see documentation page.
Reserved capacity for provisioned throughput
Enjoy cost savings of up to 65 per cent off and enhanced availability SLAs, while reducing the burden of capacity planning or management with Azure Cosmos DB reserved capacity pricing. Reserve provisioned throughput for one or three years with a one-off payment, and share the reserved provisioned throughput across all regions, APIs, accounts and subscriptions under a given enrolment. For more information, see the documentation page.
|1-year reservation||3-year reservation|
|Throughput||Single region write||Multiple region write||Single region write||Multiple region write|
|Price/Savings||Price per 100 RU/s
(savings over PAYG)
|Price per 100 RU/s
(savings over PAYG)
|Price per 100 RU/s
(savings over PAYG)
|Price per 100 RU/s
(savings over PAYG)
|First 50k RU/s||$-||$-||$-||$-||$-||$-||$-||$-|
|Next 450K RU/s||$-||$-||$-||$-||$-||$-||$-||$-|
|Next 2.5M RU/s||$-||$-||$-||$-||$-||$-||$-||$-|
|Over 3M RU/s||$-||$-||$-||$-||$-||$-||$-||$-|
Azure Cosmos DB offers unlimited transactional and analytical (preview) storage. Storage is billed as GBs of local SSD-backed logical storage used by your data and indexes across all the regions where you are using Azure Cosmos DB. For example, if you replicate an Azure Cosmos DB account across three regions, you will pay for the total storage cost in each of those three regions.
Your data is managed in two distinct storage tiers – transactional and analytical (preview) – with workloads operating on the same logical data without interfering with each other. While transactional storage is always enabled by default, you must explicitly enable analytical (preview) storage on your Cosmos container.
To estimate your storage requirement, use the capacity planner tool.
|1 GB of consumed transactional storage (row-oriented)||$-/month|
|1 GB of consumed analytical storage (column-oriented) – preview||$-/month|
For transactional storage, there is no additional charge for IOPS (input/output operations per second). For analytical storage (preview), storage transactions are billed as below:
Analytical storage transactions Preview
|Write Operations (per 10,000 operations)||$-|
|Read Operations (per 10,000 operations)||$-|
Multiple regions and availability zones
Azure Cosmos DB is a fully managed database service with turnkey global distribution and transparent multi-master replication. You can add and remove regions to your Azure Cosmos account at any time. The throughput that you configure for various Azure Cosmos databases and containers is reserved in each region associated with your Cosmos account.
In addition to multi-region configuration, you can now enable zone redundancy when selecting a region to associate with your Azure Cosmos database. Zone redundancy provides additional redundancy within a given region by replicating data across multiple zones in that region. Availability zones redundancy is available for single-region accounts, and multi-region accounts with multi-region writes enabled.
Try Azure Cosmos DB for Free
There are a variety of ways for you to get started for free with Azure Cosmos DB
|Azure Cosmos DB free tier. Develop and test applications, or run small production workloads for free within the Azure environment.||Get started: Enable free tier on a new account to receive 400 RU/s throughput and 5 GBs storage free each month for the life of your account.|
|Azure Free Account. New to Azure? Develop and test a pre-production application with Azure Cosmos DB and other Azure services.||Get started: Try Azure Cosmos DB and other Azure services as a part of a 12-month Azure Free Account. Get $200 credit for 30 days and enjoy 400 RU/s of provisioned throughput and 5 GBs of storage per month for a year.)|
|30 Days Free. Run a non-production Azure Cosmos DB database for a limited time.||Get started: Enjoy a time-limited, globally distributed Azure Cosmos DB experience free of charge and without an Azure subscription with Try Azure Cosmos DB for Free. You can renew any number of times.|
|Azure Cosmos DB Local Emulator. Test applications from your local machine without creating an Azure subscription or incurring any cost.||Get started: Download the free Azure Cosmos DB emulator from your local Windows machine. Once you’re satisfied with your database, you can deploy it by pointing to an Azure Cosmos DB instance in the cloud.|
Support and SLA
- Technical support is available through Azure Support, starting at $29/month. Billing and subscription management support is provided at no cost.
- Azure Cosmos DB is available in all Azure regions including public, government and DoD clouds. To learn more, please visit the Azure services availability by region page.
- SLA – We guarantee at least 99.99 per cent availability for single-region databases and 99.999 per cent availability for multi-region databases to successfully process requests and perform operations in Azure Cosmos DB. In addition, we offer other comprehensive SLA’s covering latency, throughput, consistency and high availability. To learn more, please visit the SLA page.
In Azure Cosmos DB, you reserve throughput (on either a database or a container) and only pay for the reserved throughput for a given hour. The benefit of the provisioned throughput-based model to the customers is that it provides guaranteed performance and elasticity at any scale. The provisioned throughput model allows Cosmos DB to offer high availability and guaranteed low latency, in addition to guaranteed throughput at the 99th percentile in a scale-independent manner. The reserved throughput is specified in terms of Request Units (RU) per second. Each operation in Azure Cosmos DB, including writes, updates, reads and queries, and updating a document, consumes CPU, memory and IOPs. That is, each operation incurs a request charge, which is expressed in request units (RUs). To learn more, please visit Request units in Azure Cosmos DB page.
You’re billed based on the provisioned throughput expressed in request units per second (RU/s) that have been reserved for your Azure Cosmos DB database or container based on an hourly rate for the time it was provisioned.
Provisioned throughput for an individual container:
If you create an Azure Cosmos DB database account in East US 2 with two containers with provisioned throughput of 500 RU/s and 700 RU/s, respectively, you would have a total provisioned throughput of 1,200 RU/s. You would thus be charged 12 x $- = $-/hour.
If your throughput needs changed, and you’ve increased each container’s capacity by 500 RU/s while also creating a new container using 20,000 RU/s, your overall provisioned capacity would be 22,200 RU/s (1,000 RU/s + 1,200 RU/s + 20,000RU/s). Your bill would then change to: $- x 222 = $-/hour.
In a month of 720 hours, if for 500 hours, provisioned throughput was 1,200 RU/s and for the remaining 220 hours, provisioned throughput was 22,200 RU/s, your monthly bill will show: 500 x $-/hour + 220 x $-/hour = $-/month.
Provisioned throughput for a database (a set of containers):
If you create an account in East US 2 with two Cosmos DB databases (with a set of collections under each) with provisioned throughput of 50K RU/s and 70K RU/s, respectively, you would have a total provisioned throughput of 120K RU/s. You would thus be charged 1200 x $- = $-/hour.
If your throughput needs changed and you increased each database’s provisioned throughput by 10K RU/s, your overall provisioned capacity would be 140K RU/s (60K RU/s + 80K RU/s). Your bill would then change to: 1,400 * $- = $-/hour.
In a month of 720 hours, if for 500 hours, provisioned throughput was 120K RU/s, and for the remaining 220 hours, provisioned throughput was 140K RU/s, your monthly bill will show: 500 x $-/hour + 220 x $-/hour = $- + $- = $-/month.
With autopilot (currently in preview), you will be billed hourly for the base price of your selected tier and the maximum provisioned throughput in autopilot mode allocated hourly based on your workload patterns. Provisioned throughput is expressed in request units per second (RU/s).
When free tier is enabled on a new Azure Cosmos DB account, you’ll get the first 400 RU/s and 5 GB of storage for free for the lifetime of the account. Additionally, when using shared throughput databases, you can create up to 25 containers that share 400 RU/s at the database level (max. 5 shared databases per free tier account). You can have a maximum of one free tier account per Azure subscription and must opt in when creating the account.
In free tier accounts, you will receive the first 400 RU/s and 5 GB of storage off your bill. Any RU/s and storage beyond 400 RU/s and 5 GB will be billed at the regular Azure Cosmos DB rates per the pricing page. The 400 RU/s applies to any type of RU/s – provisioned throughput, autopilot and multi-master.
The free tier discount is applied at the account level. For example, if in one month, an account had a total of 400 RU/s and three regions, with 5 GB in each region, the account would be billed for 800 RU/s (400 RU/s x 3 regions – 400 RU/s) and 10 GB of storage (5 GB x 3 regions – 5 GB) for each hour in the month. If the regions have different rates for RU/s and storage, the discount will reflect the rates of the region the account was created in.
When you choose to make a Cosmos account (with databases and containers) span across geographic regions, you are billed for the throughput and storage for each container in every region and the data transfer between regions. As an example, let’s assume you have a container in West US provisioned with throughput of 10K RU/s and you store 1 TB of data this month. Let’s assume that you add three regions: East US, North Europe and East Asia, each with the same storage and throughput. Your total monthly bill will be (assuming 31 days in a month):
Item Usage (Month) Rate Monthly cost Throughput bill for container in West US 10K RU/s * 24 * 31 $- per 100 RU/s per hour $- Throughput bill for 3 additional regions – East US, North Europe and East Asia 3 * 10K RU/s * 24 * 31 $- per 100 RU/s per hour $- Storage bill for container in West US 1 TB $-/GB $- Storage bill for 3 additional regions – East US, North Europe and East Asia 3 * 1TB $-/GB $- Total $-
Let’s also assume that you egress 100 GB of data every month from the container in West US to replicate data into East US, North Europe and East Asia. You are billed for egress as per data transfer rates.
When you choose to operate containers that span across multiple geographic regions, you are billed for the provisioned throughput and storage for each container in every region and the data transfer between regions. You will be billed for the provisioned throughput.
Storage capacity is billed in units of the maximum hourly amount of data stored, in GB, over a monthly period. For example, if you utilised 100 GB of storage for half of the month and 50 GB for the second half of the month, you would be billed for an equivalent of 75 GB of storage during that month.
You’re billed for each hour that the container or database exists, regardless of usage or whether the container or database is active for less than an hour. For example, if you create a container or database and delete it five minutes later, your bill will reflect one hour.
You are charged for the maximum provisioned throughput for any given hour.
For instance, if you increase provisioned throughput at 09:30 from 400 RU/s to 1,000 RU/s and then lower provisioned throughput at 10:45 back to 400 RU/s, you will be charged for two hours of 1,000 RU/s.
If you increase provisioned throughput for a container or a set of containers at 9:30 AM from 100K RU/s to 200K RU/s and then lower the provisioned throughput back to 100K RU/s at 10:45 AM, you will be charged for two hours of 200K RU/s.
You can scale up or scale down the provisioned throughput (i.e. Request Units per second) for each container or a database by using the Azure Portal, one of the supported SDKs or the REST API.
Azure Cosmos DB reserved capacity helps you save money by prepaying for one year or three years of Cosmos DB provisioned throughput capacity, allowing you to get a discount on the Cosmos DB provisioned throughput for databases and containers (tables/collections/graphs). Azure Cosmos DB reserved capacity can significantly reduce your Cosmos DB costs on regular prices with one-year or three-year upfront commitment. Reserved capacity provides a billing discount and does not affect the runtime state of your Cosmos DB resources. You can buy a reserved capacity for Cosmos DB in the Azure portal. To learn more about reserved capacity, read the Cosmos DB documentation.
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